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半导体热电阻随温度升高电阻值______，因此半导体热电阻具有______的电阻温度系数。
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产道异常对胎婴儿的影响有（）.
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设备检修或保养时，应（），总车手柄必须锁止，有专人防护。
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男，40岁，诊断急性早幼粒细胞白血病入院。化疗时突发DIC，并迅速发展至消耗性低凝血期，下列检查结果哪项是不符合的（）
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肾病综合征的主要并发症是（）
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目前认为与溃疡性结肠炎的病因无关的是（）
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根据以下资料，回答题。The social sciences are flourishing.As of 2005,there were almost half a million professional social scientists from all fields in the world, working both inside and outside academia. According to the World Social Science Report 2010,the number of social-science students worldwide has swollen by about 11% every year since 2000.Yet this enormous resource in not contributing enough to today’s global challenges including climate change, security,sustainable development and health.(41)______Humanity has the necessary agro-technological tools to eradicate hunger , from genetically engineered crops to arificial fertilizers . Here , too, the problems are social: the organization and distribution of food, wealth and prosperity.(42)____This is a shame—the community should be grasping the opportunity to raise its influence in the real world. To paraphrase the great social scientist Joseph Schumpeter:there is no radical innovation without creative destruction .Today ,the social sciences are largely focused on disciplinary problems and internal scholarly debates,rather than on topics with external impact.Analyses reveal that the number of papers including the keywords “environmental changed” or “climate change” have increased rapidly since 2004,(43)____ When social scientists do tackle practical issues ,their scope is often local:Belgium is interested mainly in the effects of poverty on Belgium for example .And whether the community’s work contributes much to an overall accumulation of knowledge is doubtful. The problem is not necessarily the amount of available funding (44)____this is an adequate amount so long as it is aimed in the right direction. Social scientists who complain about a lack of funding should not expect more in today’s economic climate.The trick is to direct these funds better.The European Union Framework funding programs have long had a category specifically targeted at social scientists.This year,it was proposed that system be changed:Horizon 2020,a new program to be enacted in 2014,would not have such a category ,This has resulted in protests from social scientists.But the intention is not to neglect social science ; rather ,the complete opposite.(45)____That should createmore collaborative endeavors and help to develop projects aimed directly at solving global problems. 请在第____处填上正确选项。
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数字卫星通信TDM/PSK/FDMA方式使用数字话音插空和低速率编码可提高传输容量（）倍。
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GSK990M数控系统准备功能中，从参考点返回的指令是（）。
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毛泽东的思想最适合我国国情和军情，具有自己的特色，只适用于技术落后的昨天，不适合技术进步的今天和明天。